Extension-lock.



L. MCCALSTER.

EXTENSION LOCK.

APPLICATION FILED APII.25. 1914.

1,179,730. Patented Apr. 18,1916.

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I I GX gw d H I o @z I* if p-I G e 11W- 1 L@ 0 Q y www WMM emes I UIT i LEVI MCCALISTR, OF HENNESSEY, OKLAHOMA.

EXTENSION-LOCK.

Application led April 25, 1914.

To all whom it may concern:

Be it known that I, LEVI MoGALrs'rnR, a citizen of the United States, residing at Hennessey, in the county of Kingfisher and State of Oklahoma, have invented certain new and useful Improvements in Extension-Locks, of which the following is a specification.

My invention relates to improved locking means for holding extension side boards of a wagon body securely in place so that danger of loss of a portion of the load of a wagon resultant in the derangement of the extension boards for the wagon body is prevented. l

An important object of my invention is to provide simple' and inexpensive `locking means by means of which extension boards to enlarge the receiving capacity of a wagon body may be readily and rigidly secured in position.

Another important object of my invention is toprovide a lockof the character described which consists of fewparts, is reliable and efficient in, operation, capable of being veasily operated and which is cheap to manufacture.

The above and additional objects are accomplished by' such means as are illustrated .in the accompanying drawings, described in lthe following specification and then more particularly pointed out as claimed.

With reference to the drawings, wherein I have illustrated the preferred embodiment of my invention as it isreduced to practice, and throughout the several views of which similar reference numerals designate corresponding partsf Figure 1 is a fragmentary side elevation of a wagon showing an extension side board thereon and my improved lock in operative position, Fig. 2 is a view vin rear elevation of the locking bolt and lever, Fig. 3 is a front elevation of a fragmentary portion of one of the end cleats, and its bracket, the locking bolt and leverbeing removed, and Fig.'4 is a transverse sectional view taken on the vertical plane indicated by the line 2-2 of Fig. 1, the lockingplever and its handle being shown in raised position.

Referring to the drawings by reference characters, 1 designates, as an entirety, a wagon of the usual construction, and 2 the side boards of the body thereof. Mounted Serial No. 834,529.

upon the side boards 2 in superposed relation thereto, are extension boards 3. The extension boards 3 rest at their lower longitudinal edges upon the upper longitudinal edges ofthe side boards 2 when the wagon is to be used for hauling grain and the like. When the wagon is to be used for hauling stock, the extension boards 3 are elevated with relation to the side boards 2 and firmly secured in such position. End cleats 4 and intermediate cleats 4a are secured to the outer sides o-f the extension boards 3, and the lower ends of the cleats project below the lower longitudinal edges of the eXtension boards 3. Brackets 5a are secured to the outer side boards 2 to recieve the proj ecting ends of the cleats 4a, and brackets 5 are mounted upon the outer side of the side boards 2 to receive the projecting ends of the cleats 4. The projecting ends of the cleats 4LL and 4 are slidably mounted in the brackets 5 and 5a so that the extension boards 3 may be raised and lowered. To

secure the extension boards 3 in either their raised or lowered position, the brackets 5 are provided with locking bolts 6 and locking levers 7. The locking bolts 6 are carried by the locking levers 7, and they pass through openings 8 formed in the brackets 5, through openings 9 formed in the cleats 4, and through openings 10 formed in the side boards 2. The inner ends of the locking bolts 6 are provided with offset lugs 11 which when in engagement with the outer faces of wear plates 12 secured to the inner sides of theside boards 2, hold the bolts against accidental withdrawal. Tofpermit the passage of the locking bolts 6 and lugs 11, the openings 9 in the cleats 4, the openings 10 in the side boards 2,v and the openings 13 in the wear plates 12, are key-hole openings. Each cleat 4 is provided with a plurality of key-hole openings 9 so that the extension boards 3 may be supported at various points above the upper longitudinal edge of the side boards 2, or so that the eX- tension boards 3 may be securedvwith their lower longitudinal edges resting upon the upper longitudinal edges of the side boards 2.- The brackets 5 are provided with circular bosses 14, which surround the openings 8, and which are provided with in-turned flanges 15. The flanges 15 prevent the withdrawal of the bolts 6 beyond the brackets 5,

Specication of Letters Patent. Patented Apri. 18, 1916- and when the offset lugs 11 of the bolts 6 are Vwithin the circular recesses 16 formed by the bosses 14: and flanges 15, the extension boards 3 may be elevated` to adapt the wagon for carrying stock. 1 j

After the side boards have been elevated to the proper position, the bolts 6 are turned by the levers 7 to register the lugs 11 with the reduced portions of the openings 9, 10 and 13, after which the. bolts 6 are shoved through the openings until their lugs 11 are beyond the plates-12.'V The bolts 6. are then turned Vby the levers 7 until the lugs 11 are out `of registration with vthe reduced por tions of the openings 13 and in engagement with theouterfsides ofthe plates 12. The levers7, each lcomprise an enlargedcircular head7a and a handle 7b, the bolts 6 projecty ing inwardly from the centersof the inner sides ofthe enlarged heads.,1 `When the lugs 11 are out of registration with lthereduced portions of the openings 13,` the handles 7a are lowermost and rin view thereof, the preponderance o the weight of each leverv is below its bolt, resulting in the bolts being held against accidental rotation. As the bolts 6 arer held against accidental rotation,

the lugs 11 will be held in such position as to prevent the accidental withdrawal of the bolts. v. I f' Pins 17 are secured, to the cleats 41 at points' above the highest of the' openings 9, andwhen the extension boards 3 are in-fposi- .tion to adapt'the ,wagon for carrying grain,

the pins 17 are'ylocated within the recesses 18 which are formed in the brackets 5. andL which open out through Atheupper-edges of the bracket. To secure the side boards in thisl position, Vthe bolts' are passed through theL highest of the'openings 9 and through Y the openings 10 4and 13, after which the levers Aare turned to'throw the lugs out ofr `openings 13.

registration with the reduced portion of the During the rotation of the levers, camr tracks19, which rfare formed on the inner sides ofthe heads 7a, are brought into engagement with the. pins 17. AThe track 19 exert a downward pull upon the pins 17,bringingl and holding the longitudinal edges of the extension boards 3 into engagementwith the upper longitudinal edges of the side board 2.

From the foregoing description, taken in connection with vthe accompanying drawings, it should bev apparentthat I provide means whereby thek extension vboards of wagons may be effectively secured in either raised or lowered position, that said means is simple and durable, and that said means may be readily and Vquickly operated to secure the extension boardsin Araised or lowered position or operated to permit the ex- Gopiesef patent ymay be obtained for ve `cents each, lay addressing the-Comniissioner vof Patents, y y washington, D. c. f

ture in presence tension boards to `be moved,v into raised vor :and referred-tok in the .aboveK4 description, as the preferred embodiment,`-is the most 'ef1i-` cient and practical; yet realizingy that the "conditionsconcurrent,with the adoption of v.my device will necessarily vary, I desire to emphasize the factV thatk lvarious minor lchanges in the detailsl of construction, proportion'and arrangementof parts may rbe lresorted to, when required, without sacrificing any of the advantages of my inve-nf4 ,Y

tion, fas set forth.

TvVhatis claimed is: j

1. .lncombination, afwagon body having i the sides thereof providedwith keyhole' openings, extension boards, cleats secured to the extension vboards andv projecting belowV f f l the lower edges thereof, said projecting ings, brackets secured toasaid sides andhaving key hole openings, said brackets receivportions of the cleats having key hole opening the projecting portions ofl'the cleats,

bolts passing through all of said openings to secure the extension boards in raised or lowered position, Loset lugs non the inner ends of the-bolts, pins carried by the cleats,

levers carried by -therbolts,v andv cam tracks carried by the levers, said levers providing means by which the bolts maybe turned tor throw the lugs out of registration lwithy the reduced portions of said openings `andrto hold Ythe VlugsA in such position, andxsaid leversprovidin-"g `n-ie'ans by which `the `cam tracks may be thrown ,into and Aheld, ,inv en gagement with the pins.

2. In combination, a wagon body, eXtension boards, cleats lsecured to the extension boards, and projecting below; the' lower edges thereof, brackets secured Vto the sides i 4 of the wagon body to Areceive the projecting portionsV of the cleats, pins,. carried bythe cleats, levers lslidably, and rotatably jmounted upon the brackets, lcam tracks carried by the levers for'engagement .with the pins lon the rotation of the levers, means to prevent the levers from having'any accidental slid-,l ing movementwithrelation to the brackets after the cam tracks haverb'een engaged with y,

the pins, and :meansfor` preventing the levers fromhaving any accidental rotation on the brackets after the cam tracks been engaged withthe pins. Y

y.have

In testimonyv whereof l aiflX 'my of two witnesses; 'j LEvr MCcALrsTEn.'

Witnesses: 1

J. H..H1'LL, i .v BARKER; f 

